Stump the Christian?

[Ravenshire]

If anyone ever grows back a missing body part, it'll be through the advances of science, not the grace of gawd.

Right.

Because God Cannot. Possibly. Exist. This is known and understood by all who have any brains.

In all of human history, it's never happened. Surely sometime, somewhere there has been an amputee so devout in his belief and in such need of his limb that he was deserving of having gawd re-grow it for him. After all, we are talking about the omnipotent being that allegedly cures all manner of horrible illnesses routinely. Show me a believer who prayed for his arm or leg back and is getting it, before science figures it out for themselves, and perhaps I'll reconsider my position. It would certainly be food for thought, though I don't expect you to actually be able to demonstrate it beyond some unverifiable claim.